Medical diagnostic illuminating instrument



FIG. 1 is a rear perspective view of a medical diagnostic illuminating instrument showing a first embodiment of my design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof. 

The ornamental design for a medical diagnostic illuminating instrument, as shown and described. 